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The I2C bus would not be well controlled by master if VDD of Driver IC is
shutdown(i.e., not applying voltage on VDD pin) because of ESD diode turning on
via P-diode of SDA/or SCL. To avoid the application issue, NOT to turn off VDD of
driver IC during whole module operation. It could be controlled by PD pin via
GPIO of ISP. The power consumption of Driver IC should be 1.4uW in the
standby mode (PD = L).
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In order to ensure the stability of output current, a compensation capacitance CL
is suggested placing across the two terminals of VCM. The suggested value of CL
is about 0.1~0.22uF and could be fine tuned for different VCM.
SP-MD218A-A.001.doc
Version：A.001
Page：13
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